FWIW, Sennheiser USA's CEO says the mod upgrade claim isn't accurate: http://twitter.com/#!/SennheiserUSA/status/37092187850153984 http://twitter.com/#!/Sennhei

FWIW, Sennheiser USA's CEO says the mod upgrade claim isn't accurate: http://twitter.com/#!/SennheiserUSA/status/37092187850153984 http://twitter.com/#!/SennheiserUSA/status/37092187850153984 ("Urban myth deserves no response. Read the specs; do the tests....all factual. Listen to both and you be the judge.") I interpreted "urban myth" as a slam instead of a firm answer, but he confirmed that's their position: http://twitter.com/#!/SennheiserUSA/status/37163867276574720 http://twitter.com/#!/SennheiserUSA/status/37163867276574720 ("Urban Myth=Not True.") I asked him to comment here, since I'd like to hear more than can fit in a tweet. With 170 comments in 16 hours, it should be in their interest to describe any manufacturing differences in more depth.